Home / 18,788.51-25,930.17-11,982.75

Finding the Fourth Proportional to 18,788.51, 25,930.17 and 11,982.75

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Solution

The fourth proportional to 18,788.51, 25,930.17 and 11,982.75 is: 16,537.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788.51 : 25,930.17 = 11,982.75 : x
  2. Step 2: Convert to fraction form
    18,788.51/25,930.17 = 11,982.75/x
  3. Step 3: Cross multiply
    18,788.51x = 25,930.17 × 11,982.75
  4. Step 4: Simplify right side
    18,788.51x = 310,714,744.57
  5. Step 5: Solve for x
    x = 310,714,744.57/18,788.51
  6. Step 6: Final answer
    x = 16,537.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.